Demister for outlet pipeline of waste gas chemical washing tower

Abstract

The utility model provides a demister for an outlet pipeline of a waste gas chemical scrubbing tower, belongs to the technical field of scrubbing tower demisting, and solves the problems that a small amount of corrosive chemical substances contained in waste gas mist are gathered on a demisting silk screen, so that the demisting silk screen is easily corroded, and the service life of the demisting silk screen is shortened. The demister for the outlet pipeline of the waste gas chemical washing tower comprises a washing tower body, a gas inlet pipe is fixed on the outer wall of the washing tower body, a gas outlet pipe is fixed at the upper end of the washing tower body, an activated carbon layer and a demisting silk screen are fixed on the gas outlet pipe, a support is fixed in the gas outlet pipe, a motor is fixed on the support, and a hollow rotating shaft is fixed at the output shaft end of the motor. A drying mechanism is arranged between the air outlet pipe and the hollow rotating shaft. The demisting device has the advantages that the demisting silk screen is kept dry, corrosion of condensed and undried water mist to the demisting silk screen is avoided, and the service life of the demisting silk screen is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of demisting washing towers and relates to a demister, in particular to a demister for an outlet pipeline of an exhaust gas chemical washing tower. Background Art

[0002] The scrubber is a new type of gas purification equipment. It is improved on the basis of the floating packing layer gas purifier and is widely used in pre-treatment of industrial waste gas purification and dust removal, with good purification effect.

[0003] After searching, it is found that a Chinese patent document discloses a mist demister for an outlet pipe of an exhaust gas chemical washing tower [application number: 202021622393.7; publication number: CN 213527955 U]. The demister for the outlet pipe of the exhaust gas chemical washing tower can improve the filtering effect of the exhaust gas, prevent air pollution and protect the environment through its arrangement; it comprises a treatment box, a cyclone demister plate, an insert block, a first bolt, a demister funnel, two groups of demister screens, a ring plate, two groups of connecting rods and an activated carbon adsorption net; a chamber is arranged in the treatment box, an air inlet pipe is arranged at the top of the treatment box, the cyclone demister plate is located in the treatment box chamber, the right end of the cyclone demister plate and the left end of the insert block are fixedly connected, a slot is arranged on the right inner wall of the treatment box, the insert block is inserted into the slot, a threaded hole is arranged on the left end of the cyclone demister plate, the first bolt passes through the threaded hole of the cyclone demister plate, the bottom end of the cyclone demister plate and the top end of the demister funnel are screwed and connected by the first bolt, the two groups of demister screens are sequentially placed in the demister funnel, and the bottom end of the demister funnel passes through the ring plate and is clamped.

[0004] The cyclone defogger plate and defogger screen disclosed in the patent separate large particle impurities and gases in the exhaust gas through the cyclone defogger plate by gravity, centrifugal action and adsorption, thereby improving the treatment effect of the exhaust gas. After that, the small particle impurities in the exhaust gas can be filtered out by filtering through the defogger screen, and then the exhaust gas is further filtered through the activated carbon adsorption screen, thereby improving the filtering effect of the exhaust gas, preventing air pollution and protecting the environment. However, the mist of the exhaust gas contains corrosive chemicals, and a small amount of them accumulated on the defogger screen can easily corrode the defogger screen, thereby reducing the service life of the defogger screen. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems in the existing technology and propose a demister for the outlet pipe of an exhaust gas chemical washing tower. The technical problem to be solved by the utility model is: how to keep the demister screen dry, avoid the condensed undried water mist from corroding the demister screen, and increase the service life of the mist screen.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A demister for an outlet pipe of a waste gas chemical scrubbing tower comprises a scrubbing tower body, an air inlet pipe is fixed to the outer wall of the scrubbing tower body, an air outlet pipe is fixed to the upper end of the scrubbing tower body, an activated carbon layer and a demister screen are fixed to the air outlet pipe, a bracket is fixed inside the air outlet pipe, a motor is fixed to the bracket, a hollow rotating shaft is fixed to the output shaft end of the motor, and a drying mechanism is arranged between the air outlet pipe and the hollow rotating shaft.

[0008] The working principle of the utility model is that the exhaust gas enters the washing tower through the air inlet pipe for purification, and then the water mist and impurities in the exhaust gas are filtered through the demister wire mesh and the activated carbon layer, which easily causes the water mist to condense on the demister wire mesh. The water mist on the demister wire mesh is dried by the drying mechanism to avoid a large amount of water mist condensing on the demister wire mesh to cause corrosion and affect the service life.

[0009] The drying mechanism comprises a bellows fixed on the air outlet pipe, a fan and an electric heating wire are fixed in the bellows, a hollow box is fixed on the hollow shaft, air outlet holes are opened on both the upper and lower surfaces of the hollow box, and the bellows is connected to the hollow shaft.

[0010] With the above structure, by installing the hollow box, starting the fan and the electric heating wire, the air flow is converted into hot air flow through the electric heating wire, enters the hollow shaft and is blown out through the air outlet holes on the hollow box, and the motor is started to drive the hollow shaft to rotate, thereby driving the hollow box to rotate, so that the hot air flow is evenly sprayed between the demisting wire mesh and the activated carbon layer, and the demisting wire mesh and the activated carbon layer are dried, thereby preventing a large amount of water mist from condensing on the demisting wire mesh to cause corrosion and affect the service life.

[0011] A sleeve is rotatably connected to the hollow rotating shaft, the sleeve is communicated with the hollow rotating shaft, and the bellows is communicated with the hollow rotating shaft through an air supply pipe.

[0012] With the above structure, by installing the sleeve, the hot air in the bellows enters the sleeve through the air supply pipe and then enters the hollow shaft, thereby achieving the goal of not affecting the rotation of the hollow shaft while delivering hot air to the hollow shaft.

[0013] A hollow rod is fixed on the outer wall of the hollow shaft, a scraper strip is fixed on the hollow rod, and absorbent cotton is fixed on the outer wall of the hollow shaft. Both the scraper strip and the absorbent cotton are in contact with the demisting screen.

[0014] By adopting the above structure, by installing scraper strips and absorbent cotton, the hollow shaft drives the scraper strips and absorbent cotton to rotate on the defogger screen when rotating, so as to scrape off and dry the water mist on the defogger screen, and avoid a large amount of water mist condensing on the defogger screen to cause corrosion and affect the service life.

[0015] The absorbent cotton is of an "L"-shaped structure, and two air outlet holes are provided on the surfaces of the hollow rod and the absorbent cotton corresponding to each other.

[0016] By adopting the above structure, by opening the second air outlet hole and the water-absorbing cotton having an "L"-shaped structure, the hot air flow enters the hollow rod from the hollow shaft and is aimed at the water-absorbing cotton when it is sprayed out from the second air outlet hole, so that the water-absorbing cotton can be dried and the water absorption effect of the water-absorbing cotton is improved.

[0017] Compared with the prior art, the exhaust gas chemical scrubber outlet pipe demister has the following advantages:

[0018] 1. The exhaust gas enters the scrubbing tower through the air inlet pipe for purification, and then the water mist and impurities in the exhaust gas are filtered through the demister screen and the activated carbon layer, which easily causes the water mist to condense on the demister screen. The water mist on the demister screen is dried by the drying mechanism to avoid a large amount of water mist condensing on the demister screen to cause corrosion and affect the service life.

[0019] 2. By installing the hollow box, starting the fan and the electric heating wire, the airflow becomes hot airflow through the electric heating wire, enters the hollow shaft and blows out through the air outlet on the hollow box, and starts the motor to drive the hollow shaft to rotate, thereby driving the hollow box to rotate, so that the hot airflow is evenly sprayed between the demisting wire mesh and the activated carbon layer, and the demisting wire mesh and the activated carbon layer are dried, thereby preventing a large amount of water mist from condensing on the demisting wire mesh to cause corrosion and affect the service life.

[0020] 3. By installing scraper strips and absorbent cotton, the hollow shaft drives the scraper strips and absorbent cotton to rotate on the defogger screen when rotating, so as to scrape off and dry the water mist on the defogger screen, thus avoiding a large amount of water mist condensing on the defogger screen to cause corrosion and affect the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 It is a cross-sectional view of the utility model.

[0023] Figure 3 It is a structural schematic diagram of the hollow rotating shaft of the utility model.

[0024] In the figure, 1. washing tower body; 2. air inlet pipe; 3. air outlet pipe; 4. activated carbon layer; 5. defogger screen; 6. bracket; 7. motor; 8. hollow shaft; 9. bellows; 10. fan; 11. heating wire; 12. hollow box; 13. air outlet one; 14. sleeve; 15. air supply pipe; 16. hollow rod; 17. scraper strip; 18. absorbent cotton; 19. air outlet two. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] like Figure 1-Figure 3 As shown, the demister for the outlet pipe of the exhaust gas chemical washing tower comprises a washing tower body 1, an air inlet pipe 2 is fixed to the outer wall of the washing tower body 1, an air outlet pipe 3 is fixed to the upper end of the washing tower body 1, an activated carbon layer 4 and a demister screen 5 are fixed on the air outlet pipe 3, a bracket 6 is fixed inside the air outlet pipe 3, a motor 7 is fixed on the bracket 6, a hollow rotating shaft 8 is fixed to the output shaft end of the motor 7, and a drying mechanism is arranged between the air outlet pipe 3 and the hollow rotating shaft 8.

[0027] The exhaust gas enters the scrubbing tower through the air inlet pipe 2 for purification, and then the water mist and impurities in the exhaust gas are filtered through the demisting mesh 5 and the activated carbon layer 4, which may easily cause the water mist to condense on the demisting mesh 5. The water mist on the demisting mesh 5 is dried by the drying mechanism to prevent a large amount of water mist from condensing on the demisting mesh 5 to cause corrosion and affect the service life.

[0028] The drying mechanism includes a bellows 9 fixed on the air outlet pipe 3, a fan 10 and an electric heating wire 11 are fixed in the bellows 9, a hollow box 12 is fixed on the hollow shaft 8, air outlet holes 13 are opened on the upper and lower surfaces of the hollow box 12, and the bellows 9 is connected to the hollow shaft 8.

[0029] With the above structure, by installing the hollow box 12, starting the fan 10 and the heating wire 11, the air flow is converted into hot air flow through the heating wire 11, enters the hollow shaft 8 and is blown out through the air outlet 13 on the hollow box 12, and the motor 7 is started to drive the hollow shaft 8 to rotate, thereby driving the hollow box 12 to rotate, so that the hot air flow is evenly sprayed between the demisting screen 5 and the activated carbon layer 4, and the demisting screen 5 and the activated carbon layer 4 are dried, thereby preventing a large amount of water mist from condensing on the demisting screen 5 to cause corrosion and affect the service life.

[0030] A sleeve 14 is rotatably connected to the hollow rotating shaft 8 , the sleeve 14 is communicated with the hollow rotating shaft 8 , and the bellows 9 is communicated with the hollow rotating shaft 8 through an air supply pipe 15 .

[0031] With the above structure, by installing the sleeve 14, the hot air in the bellows 9 enters the sleeve 14 through the air supply pipe 15 and then enters the hollow shaft 8, thereby achieving the goal of not affecting the rotation of the hollow shaft 8 while delivering hot air to the hollow shaft 8.

[0032] A hollow rod 16 is fixed to the outer wall of the hollow shaft 8 , a scraper strip 17 is fixed on the hollow rod 16 , and absorbent cotton 18 is fixed to the outer wall of the hollow shaft 8 . Both the scraper strip 17 and the absorbent cotton 18 are in contact with the demisting screen 5 .

[0033] By adopting the above structure, by installing the scraper strip 17 and the absorbent cotton 18, the hollow shaft 8 drives the scraper strip 17 and the absorbent cotton 18 to rotate on the defog screen 5, so that the water mist on the defog screen 5 can be scraped off and wiped dry, avoiding a large amount of water mist condensing on the defog screen 5 to cause corrosion and affect the service life.

[0034] The absorbent cotton 18 is of an "L"-shaped structure, and the surfaces of the hollow rod 16 corresponding to the absorbent cotton 18 are both provided with air outlet holes 19.

[0035] By adopting the above structure, by opening the second air outlet 19 and the water-absorbing cotton 18 having an "L"-shaped structure, the hot air flow enters the hollow rod 16 from the hollow rotating shaft 8 and is aimed at the water-absorbing cotton 18 when spraying out from the second air outlet 19, so that the water-absorbing cotton 18 can be dried and the water absorption effect of the water-absorbing cotton 18 is improved.

[0036] The working principle of the utility model is as follows: the exhaust gas enters the washing tower through the air inlet pipe 2 for purification, and then the water mist and impurities in the exhaust gas are filtered through the demisting screen 5 and the activated carbon layer 4, the fan 10 and the electric heating wire 11 are started, the air flow is converted into a hot air flow through the electric heating wire 11, enters the hollow shaft 8, and then blows out through the air outlet 13 on the hollow box 12, the motor 7 is started to drive the hollow shaft 8 to rotate, thereby driving the hollow box 12 to rotate, so that the hot air flow is evenly sprayed between the demisting screen 5 and the activated carbon layer 4, and the demisting screen 5 and the activated carbon layer 4 are dried, and when the hollow shaft 8 rotates, the scraping strip 17 and the absorbent cotton 18 are driven to rotate on the demisting screen 5, the water mist on the demisting screen 5 is scraped off and wiped dry, the hot air flow enters the hollow rod 16 from the hollow shaft 8, and when it is sprayed out from the air outlet 19, it is aimed at the absorbent cotton 18, so that the absorbent cotton 18 can be dried.

[0037] In summary, the drying mechanism can be used to keep the demisting mesh dry, avoid the condensed wet mist from corroding the demisting mesh, and increase the service life of the demisting mesh.

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A demister for an outlet pipe of an exhaust gas chemical scrubber, comprising a scrubber body (1), characterized in that: An air inlet pipe (2) is fixed to the outer wall of the washing tower body (1), an air outlet pipe (3) is fixed to the upper end of the washing tower body (1), an activated carbon layer (4) and a demisting screen (5) are fixed to the air outlet pipe (3), a bracket (6) is fixed inside the air outlet pipe (3), a motor (7) is fixed to the bracket (6), a hollow rotating shaft (8) is fixed to the output shaft end of the motor (7), and a drying mechanism is arranged between the air outlet pipe (3) and the hollow rotating shaft (8).

2. The exhaust gas chemical scrubber outlet pipe demister according to claim 1, characterized in that: The drying mechanism comprises a bellows (9) fixed on the air outlet pipe (3), a fan (10) and an electric heating wire (11) being fixed inside the bellows (9), a hollow box (12) being fixed on the hollow rotating shaft (8), an air outlet hole (13) being provided on both the upper and lower surfaces of the hollow box (12), and the bellows (9) being in communication with the hollow rotating shaft (8).

3. The demister for the outlet pipe of the exhaust gas chemical scrubber according to claim 2, characterized in that: A sleeve (14) is rotatably connected to the hollow rotating shaft (8), the sleeve (14) is in communication with the hollow rotating shaft (8), and the bellows (9) is in communication with the hollow rotating shaft (8) via an air supply pipe (15).

4. The demister for the outlet pipe of an exhaust gas chemical scrubber according to claim 1, characterized in that: A hollow rod (16) is fixed to the outer wall of the hollow rotating shaft (8), a scraper strip (17) is fixed to the hollow rod (16), and water-absorbing cotton (18) is fixed to the outer wall of the hollow rotating shaft (8), and the scraper strip (17) and the water-absorbing cotton (18) are both in contact with the demisting screen (5).

5. The demister for the outlet pipe of the exhaust gas chemical scrubber according to claim 4, characterized in that: The absorbent cotton (18) is of an "L"-shaped structure, and the surfaces of the hollow rod (16) corresponding to the absorbent cotton (18) are both provided with two air outlet holes (19).

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